2004 Bmw Z4: Reliability Data

Source: NHTSA — 443 complaints
443
Total Complaints
48,000mi
Median Mileage
STEERING
Top Issue
2
Crash Reports

When Do Complaints Happen?

Distribution of NHTSA complaints by vehicle mileage at time of report.

30,000 25th Percentile
48,000 Median Mileage
68,000 75th Percentile

What Fails?

Most reported component issues from NHTSA complaints.

STEERING
362
AIR BAGS
17
ELECTRICAL SYSTEM
14
STEERING:ELECTRIC POWER ASSIST SYSTEM
9
STEERING:COLUMN
7
EXTERIOR LIGHTING
6
ELECTRONIC STABILITY CONTROL (ESC)
3
VISIBILITY/WIPER
3
STRUCTURE:BODY
2
SERVICE BRAKES
2

Severity Assessment

2
Crashes
2
Fires
0
Injuries
0
Deaths

Sample Complaint Reports

"POOR VISABILITY OUT OF CONVERTIBLE CONCELLED DURING TEST DRIVE. CAR HAS LIMITED SIGHT ON RIGHT WITH TOP UP. *AK"
"PROBLEM: EPS STEERING GETS VERY STICKY AFTER CAR HAS SAT IN DIRECT SUNLIGHT FOR A FEW HOURS. MINOR STEERING CORRECTIONS ARE NEARLY IMPOSSIBLE. PROBLEM CLEARS UP AFTER CAR HAS BEEN GARAGED FOR A COUPLE HOURS AND ALLOWED TO COOL. THIS PROBLEM MAKES THE CAR FEEL VERY UNSAFE TO DRIVE. I AM CONSTA..."
"IN VERY HOT HOT WEATHER THE STEERING BECOMES DANGEROUSLY OFF-CENTER."

Source: NHTSA ODI Complaints Database. Names and identifying details omitted.

Data source: View this vehicle on NHTSA.gov | NHTSA ODI Complaints Database. Public domain.

Methodology: Complaint counts and mileage distributions are computed directly from consumer-reported NHTSA complaints. This data represents reported issues, not failure rates — vehicles without complaints are not represented. Full methodology.

Data through: 2026-03-28